Book



G. MARSHALL.

} BOOK. APPLICATION FILED JAN. 24-, 1920.

1,373,090. rmntd Mar. 29, 1921.

q/ INVENTOR.

{5 2 GRANVILLE msmL. Q PER.

/ 6 ATTORNEYS PATENT orrics.

GRANVILLE MARSHALL, OF LONDON, ENGLAND.

BOOK.

Specification of Letters Patent.

Patented Mar. 29, 1921.

Application filed January 24, 1920. Serial No. 353,800.

To all whom it may concern:

Be it known that I, GRANVILLE MARSHALL, subject of the King of Great Britain and Ireland, residing at 46 Museum street, London, in the county of London, England, have invented certain new and useful Improvements in Books, of which the following is a specification.

This invention relates to improvements in books of that kind which comprises a book unit, composed of a collection of sheets bound together, detachably secured within a board cover, so that when filed or done with the book unit may be removed from the cover and replaced by a fresh one.

My invention is chiefly designed for application to large ledgers, cash books, and the like whose chief expense lies in their heavy board covers.

It has before been proposed to secure tapes or the like to a detachable book unit, which tapes are passed under plates fixed inside the cover boards, the ends of the tapes being then secured to the inner sides of the cover boards by buckles, clamps or studs, to hold them against withdrawal.

According to my invention, straps, secured to the removable book unit, are passed through openings in the cover to the exterior thereof and are detachably secured, embracing the cover back by suitable means, such as buckles, press buttons or the like. By

this construction the book unit is very easily removed and replaced, is very securely held in position and no fastening devices are interposed between the cover boards and the book unit, permitting said boards to lie fiat upon and in close contact with said unit.

In the annexed drawings in which similar numerals refer to corresponding parts in all the figures Figure l is a perspective view of abook in accordance with my invention.

Fig. 2 is a side view of the board cover. Fig, 3 is a back-view of the book unit to be detachably connected with the cover.

Fig. 4c is a side view of this unit. Fig. 5 is a transverse section of Fig. 4, and,

Fig. 6 is a cross section of the book assembled with the outer cover in place.

1 is the board cover, and 2 the book unit, composed of a collection of bound sheets to be detachably secured therein. Bound in with the book unit in any suitable manner are the straps 3. By way of example merely, they are here shown as secured to the book unit in the following manner Bound up with the leaves of the unit 2 are outer boards 4, the strap ends enter slots 5 in these boards, half boards 6 are then laid over the boards 4, and a covering of cloth or the like, not shown, overlaid, the whole be- .ing adhesively secured together.

In the back 7 of the cover are slots 8 through which the straps are passed, to the exterior of the cover and then buckled together embracing the cover back, thereby firmly and detachably holding the book unit 2 yvithin its cover. Between each pair of slots 8 the cover back is formed with a groove 9 in which the straps may lie substantially flush with said back.

What I claim as my invention and desire to obtain by Letters atent is:

1. In a book, a board cover, a unit composed of a collection of sheets bound together detachably secured within the cover, straps upon the unit, slots in the board cover through which the straps pass and means for securing the straps around the back of the board cover.

2. In a book, a board cover, a unit composed of a collection of sheets bound together detachably secured within the cover, strapsupon the unit, slots in the board cover through which the straps pass and means for securing the straps around the back of the board cover and grooves in the back of the board cover in which the straps lie when secured.

3; In a book, a board cover, a unit composed of a collection of sheets bound together detachably secured with the cover, a board bound upon each side of the unit, slots in these boards, straps secured to these boards by passing their ends through the said slots, half boards secured over the said straps, slots in the board cover, through which the straps pass and means for securing the straps around the back of the board cover.

4. In a book, a board cover, a unit composed of a collection of sheets bound together detachably secured Within the cover,

' a board bound upon each side of the unit,

slots in these boards, straps secured to these 10 boards by passing their ends through the said slots, half hoards secured over the said straps, slots in the board cover through which the straps pass and means or securing the straps around the back of the board cover, and grooves in the back of the board cover 111 WhlCh the straps he when secured.

GRANVILLE MARSHALL. 

